Tough one. I'd agree largely with what you two have:

Vaan - Swords, Daggers,
Balthier - Guns, Spears, Poles
Fran - Bows, Bare-handed, Axes & Hammers
Basch - Greatswords, Swords, Axes & Hammers
Ashe - Swords, Bombs, Maces
Penelo - Staves, Rods, Bare-handed (she was taught martial arts by her brothers, the manual tells me)